package main

import "fmt"

func main() {

	var ch byte
	_, _ = fmt.Scanf("%c", &ch)

	switch ch {
	case 'a', 'b', 'c', 'd', 'e':
		ch1 := ch - 32
		fmt.Printf("%c\n", ch1)
	default:
		fmt.Println("other")
	}

	//var ch1 byte = 'a'
	//var ch2 byte = 'A'
	//fmt.Println(ch1, ch2)
}
